LeBron James is seriously considering running for president of the National Basketball Players Association, multiple sources told ESPN. James is giving a run "some very heavy thought," one source said. The biggest consideration for James will be the time commitment being the union president would require. James has limited time to give because of sponsorship and charity commitments in addition to playing. Deep playoff runs with the Miami Heat the past three seasons have also been taxing. Still, James has been investigating the issue with advisers and fellow players this summer. "It's a very important position for where things are going," a source close to James said. Current NBPA president Derek Fisher's term expired this summer. The association could elect a replacement as soon as August, when they have their annual meeting in Las Vegas. Source: ESPN